.side-menu {
  position: sticky;
  top: 60px;
}
.side-menu ul {
  list-style: none;
  display: flex;
  height: auto;
  flex-direction: column;
}
.side-menu ul li {
  --button-border-radius: 3px;
  --button-background: #fff;
  --button-height: 60px;
  margin-bottom: 15px;
}
.side-menu ul li a {
  z-index: 0;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  gap: 5px;
  box-sizing: border-box;
  height: var(--button-height);
  padding: 0 calc(var(--button-height) / 2);
  max-width: var(--button-max-width, 100%);
  background-color: var(--button-background);
  color: var(--button-color);
  font-weight: 500;
  border-radius: var(--button-border-radius);
  border: var(--button-border-size) solid var(--button-border-color, var(--button-background-color));
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
  min-width: 300px;
  max-width: 300px;
}
.side-menu ul li a:hover, .side-menu ul li a:focus, .side-menu ul li a.is-active {
  font-weight: 500;
  color: var(--button-hover-color);
  background: var(--button-hover-background);
  border-color: var(--button-hover-border-color, var(--button-hover-background));
}
@media (max-width: 992px) {
  .side-menu {
    display: block !important;
  }
  .side-menu ul li {
    display: block;
    flex-grow: 1;
    min-width: 100%;
    text-align: center;
  }
  .side-menu ul li a {
    z-index: 0;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    gap: 5px;
    box-sizing: border-box;
    height: var(--button-height);
    padding: 0 calc(var(--button-height) / 2);
    max-width: var(--button-max-width, 100%);
    background-color: var(--button-background);
    color: var(--button-color);
    font-weight: 500;
    border-radius: var(--button-border-radius);
    border: var(--button-border-size) solid var(--button-border-color, var(--button-background-color));
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
    min-width: 100%;
    width: 100%;
  }
  .side-menu ul li a:hover, .side-menu ul li a:focus, .side-menu ul li a.is-active {
    font-weight: 500;
    color: var(--button-hover-color);
    background: var(--button-hover-background);
    border-color: var(--button-hover-border-color, var(--button-hover-background));
  }
}